Guide for locks



March .18, 1930i A. HAUSER 1,751,153

GUIDE FOR LOCKS Filed Oct. 1a, 1928 .IN I/EN 70K Mae/Mull MM Patented Mar. 18, 1930 UNITED STATES ADALB RT HAUSER, or nEWvoRK, 1v. Y.

GUIDE FOR LooKs Application filed October 16, 1928. Serial No. 312,841.

My invention relates to improvements in looks in particular of the cylinder type and has for its object to provide means to insert the key in the keyhole without the necessity of seeing the look exactly.

It is very annoying to try to insert the key in dark hallways or when the hands are occupied and the present invention aims to provide means to overcome this disadvantage.

Further objects will be disclosed in the specified description.

In the main the invention consists of a guide with a substantially straight guiding surface at about a right angle, located in front of the lock beneath the cylinder so that the key placed straight on the guide reaches with its pointed end the keyslot sufiiciently to slip in when moved forward.

In the drawing two embodiments of the invention are illustrated. Fig. 1 is a front view of a cylinder lock with the guide in front. Fig. 2 is a side elevation, Fig. 3 is a sectional view thru lines AB of Fig. 1 with the key inserted. Fig. 4 is a perspective view of the guide, Fig. 5 is a side view of a cylinder lock with the guide partly in section with the key in the starting position. Fig. 6 is a front view of a cylinder lock with a guide of another modification in front of it. Fig. 7 is a sectional view thru lines CD of Fig. 6, with the key in position to slip into the keyhole. Fig. 8 isa section thru the cylinder ring itself, Fig. 9 is a front view of the guide of the second modification. Fig. 10 is a side view of the guide. Fig. 11 is a front view of a cylinder ring of the modification Figs. 6-10.

In the modification as shown in Figs. 1-5 the guide consists of a hollow metal punching 1 with extensions 2 parallel to the lock surface and fastened to the door with screws 8. The guiding surface touches the cylinder housing and the back parts of the guide 1516 partly embrace the cylinder housing and ring 5. The cylinder housing 4 rests with its head on ring 5 and is held in its place by the threaded bolt 7 and disc 6 in the usual manner. The guide is preferably of onesidedly open wing form so that it will lead,

the key 24 placed anywhere within its ends I 8to the deepest spot 10 before the keyhole.

This spot 10 is located beneath the'cylinder 12 at such a distance that the key placed on the guide will reach with its pointed end 17 in the keyslot 13 sufiiciently to raise itself when; moved forward and on leaving the guide slip; into the keyslot. The key bottom 18 will be then at a suflicient distance from the guide to allow the lug 9 ofthe key to turn around above the depression 10 of the guide.

The cylinders 12 operate the lock in the usual ;m anner, and the cylinder housing is provided as usual with a shallow depression 14 forthe kiey'endl The guide can best befastened to the door-in the proper position by placing the key in the lock first and then putting the guide against the lug? of the key and fastenving the guide with thee-crews?) in this position, as "shown in Fig; l. i In the drawing only few pin tumblers are shown the restare omitted so as not to interfere with the illustration of other parts. A partof the lQckmech- .anisin is indicated at -26;, the rest ofthe lockit self is omitted not being an essential part .ofthe invention.

' In Figs. 61-O another modification of the ,i-nvention'is illustrated which differs from, the foregoingas well in the formo-f the. guide as in the fastening of the same. l/Vhile the ,first' one is fastened to the door; andcan be added to looks already in the door,*the second modification iscombined with-the ring ofthe cylinder-lock so thatit canbe: used on :doors where no fastening screws canbe used onthedoor.

.7 A cylinder lock fastened to a'lock body in the usual manner by threads .or otherwise,

hOldsa ring 5'by means of its-head 4A resting .againstthe' edge 22 of the-ring; The ring; -5-1s preferably of a form hav ng anvouter" flat surface 23 upon which thefguide is fastened. The guide-consists offhase 1; 9 Which.

has a rim 2119f a wing form siinilargtoitlie first modification, that is, i tfollows -deepest spot 10' the cylinder and extends with its wings8tothe5periphery of the rings The 2 V or 1,751,153

ing the cylinder ring '5 and after the cylinder housing is placed in the ring, the guide is fastened in placeby screws.

In bothmodifications the efiective part 10 respectively 1 and 21 of the guide is straight at about right angle to the cylinder surface so that it provides a sufficient rest for the keyback in order to hold th'ekey in such .a position that the tip of the key will'reach the slot.

Whilemany variations of form of the guide and the way of its fastening can bemade within the spirit of this invention it is an important feature of having the guide of a surface and location that it is suited to lead the key in the slot and the-same time avoiding any chance to use it for turning the look by force.

What I claim is:

1. In a cylinder lock of the type comprising a cylinder housing 'and a cylinder rotatable therein having a key slot in the front thereof, the combination therewith of a key guide having a bodymember rigidly disposed with respect to said cylinder housing, straddling the lower part of said key slot with its lowermost part spaced below the lower end of the key slot whereby the usual cylinder lock key with its bevelled end and insertion limitipg lug will readily be guided intothe key s ot.

2. In a cylinder lock of the type comprising a cylinder housing and a cylinder rotatably mounted therein having a'key slot at its forward end; the combination therewith of a key guide having a V shaped surface and "rigidly aflixed against movement relative to the cylinder housing and disposed symmetrically in straddling relation under said key slot .with the apex of said guide spaced below the-lower end of the key slot by a distance substantially equal tothe height of the nessof the cylinder lock with which said guide is to be associated.

5. A key guide for looks of the cylinder 7 lock type comprising a body member of an mtegral piece comprising a curved bracket portion having protruding mounting means at one edge thereof and having an upstanding ledge along the other edge. there0f,the upper edge of which ledge is conformed as a V shaped key guiding surface.

In testimony whereof, Adalbert Hauser has signed his name to this specification, this 15th 'day of October, 1928.

- ADALBEBT HAUSERL key limiting lug of an ordinary cylinder lock key.

' f 3. A 'key, guide for looks of'thecylinder lock type comprising a body member having ,a V shaped guiding surface having unitary therewith mounting appurtenances adapted to be aflixed to a door and to space the V shaped guiding surface from the door by a distance suflicient to accommodate the thickness of the protruding part of the cylinder lock, said key guide when closely associated with, the periphery of the cylinder lock havingthe apex of its V shaped conformation disposed with suitable clearance below the lower end of the key slot.

r 4. A key guide for looks of the cylinder locktype comprising 7 abody member having mountingmeans, a.-V shaped guiding edge and structure unitary therewith spacing said guiding edge verticallyiandlaterally with respect to said mounting means for accommodati0n of the periphery and of the outer thick- 

